1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
|
// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <string_view>
#include "shader_recompiler/backend/glsl/emit_context.h"
#include "shader_recompiler/frontend/ir/value.h"
namespace Shader::Backend::GLSL {
namespace {
void SetZeroFlag(EmitContext& ctx, IR::Inst& inst, std::string_view result) {
IR::Inst* const zero{inst.GetAssociatedPseudoOperation(IR::Opcode::GetZeroFromOp)};
if (!zero) {
return;
}
ctx.AddU1("{}={}==0;", *zero, result);
zero->Invalidate();
}
void SetSignFlag(EmitContext& ctx, IR::Inst& inst, std::string_view result) {
IR::Inst* const sign{inst.GetAssociatedPseudoOperation(IR::Opcode::GetSignFromOp)};
if (!sign) {
return;
}
ctx.AddU1("{}=int({})<0;", *sign, result);
sign->Invalidate();
}
} // Anonymous namespace
void EmitIAdd32(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
const auto result{ctx.reg_alloc.Define(inst, Type::U32)};
if (IR::Inst* const carry{inst.GetAssociatedPseudoOperation(IR::Opcode::GetCarryFromOp)}) {
ctx.Add("{}=uaddCarry({},{},carry);", result, a, b);
ctx.AddU1("{}=carry!=0;", *carry, result);
carry->Invalidate();
} else {
ctx.Add("{}={}+{};", result, a, b);
}
SetZeroFlag(ctx, inst, result);
SetSignFlag(ctx, inst, result);
if (IR::Inst * overflow{inst.GetAssociatedPseudoOperation(IR::Opcode::GetOverflowFromOp)}) {
// https://stackoverflow.com/questions/55468823/how-to-detect-integer-overflow-in-c
constexpr u32 s32_max{static_cast<u32>(std::numeric_limits<s32>::max())};
ctx.AddU1("{}=int({})>=0?int({})>int({}-{}):int({})<int({}-{});", *overflow, a, b, s32_max,
a, b, s32_max, a);
overflow->Invalidate();
}
}
void EmitIAdd64(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
ctx.AddU64("{}={}+{};", inst, a, b);
}
void EmitISub32(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
ctx.AddU32("{}={}-{};", inst, a, b);
}
void EmitISub64(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
ctx.AddU64("{}={}-{};", inst, a, b);
}
void EmitIMul32(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
ctx.AddU32("{}={}*{};", inst, a, b);
}
void EmitINeg32(EmitContext& ctx, IR::Inst& inst, std::string_view value) {
ctx.AddU32("{}=-({});", inst, value);
}
void EmitINeg64(EmitContext& ctx, IR::Inst& inst, std::string_view value) {
ctx.AddU64("{}=-({});", inst, value);
}
void EmitIAbs32(EmitContext& ctx, IR::Inst& inst, std::string_view value) {
ctx.AddU32("{}=abs(int({}));", inst, value);
}
void EmitIAbs64(EmitContext& ctx, IR::Inst& inst, std::string_view value) {
ctx.AddU64("{}=abs(int64_t({}));", inst, value);
}
void EmitShiftLeftLogical32(EmitContext& ctx, IR::Inst& inst, std::string_view base,
std::string_view shift) {
ctx.AddU32("{}={}<<{};", inst, base, shift);
}
void EmitShiftLeftLogical64(EmitContext& ctx, IR::Inst& inst, std::string_view base,
std::string_view shift) {
ctx.AddU64("{}={}<<{};", inst, base, shift);
}
void EmitShiftRightLogical32(EmitContext& ctx, IR::Inst& inst, std::string_view base,
std::string_view shift) {
ctx.AddU32("{}={}>>{};", inst, base, shift);
}
void EmitShiftRightLogical64(EmitContext& ctx, IR::Inst& inst, std::string_view base,
std::string_view shift) {
ctx.AddU64("{}={}>>{};", inst, base, shift);
}
void EmitShiftRightArithmetic32(EmitContext& ctx, IR::Inst& inst, std::string_view base,
std::string_view shift) {
ctx.AddS32("{}=int({})>>{};", inst, base, shift);
}
void EmitShiftRightArithmetic64(EmitContext& ctx, IR::Inst& inst, std::string_view base,
std::string_view shift) {
ctx.AddU64("{}=int64_t({})>>{};", inst, base, shift);
}
void EmitBitwiseAnd32(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
ctx.AddU32("{}={}&{};", inst, a, b);
}
void EmitBitwiseOr32(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
ctx.AddU32("{}={}|{};", inst, a, b);
}
void EmitBitwiseXor32(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
ctx.AddU32("{}={}^{};", inst, a, b);
}
void EmitBitFieldInsert(EmitContext& ctx, IR::Inst& inst, std::string_view base,
std::string_view insert, std::string_view offset, std::string_view count) {
ctx.AddU32("{}=bitfieldInsert({}, {}, int({}), int({}));", inst, base, insert, offset, count);
}
void EmitBitFieldSExtract(EmitContext& ctx, IR::Inst& inst, std::string_view base,
std::string_view offset, std::string_view count) {
const auto result{ctx.reg_alloc.Define(inst, Type::U32)};
ctx.Add("{}=uint(bitfieldExtract(int({}),int({}),int({})));", result, base, offset, count);
SetZeroFlag(ctx, inst, result);
SetSignFlag(ctx, inst, result);
}
void EmitBitFieldUExtract(EmitContext& ctx, IR::Inst& inst, std::string_view base,
std::string_view offset, std::string_view count) {
const auto result{ctx.reg_alloc.Define(inst, Type::U32)};
ctx.Add("{}=uint(bitfieldExtract(uint({}),int({}),int({})));", result, base, offset, count);
SetZeroFlag(ctx, inst, result);
SetSignFlag(ctx, inst, result);
}
void EmitBitReverse32(EmitContext& ctx, IR::Inst& inst, std::string_view value) {
ctx.AddU32("{}=bitfieldReverse({});", inst, value);
}
void EmitBitCount32(EmitContext& ctx, IR::Inst& inst, std::string_view value) {
ctx.AddU32("{}=bitCount({});", inst, value);
}
void EmitBitwiseNot32(EmitContext& ctx, IR::Inst& inst, std::string_view value) {
ctx.AddU32("{}=~{};", inst, value);
}
void EmitFindSMsb32([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,
[[maybe_unused]] std::string_view value) {
throw NotImplementedException("GLSL Instruction");
}
void EmitFindUMsb32([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,
[[maybe_unused]] std::string_view value) {
throw NotImplementedException("GLSL Instruction");
}
void EmitSMin32(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
ctx.AddU32("{}=min(int({}), int({}));", inst, a, b);
}
void EmitUMin32(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
ctx.AddU32("{}=min(uint({}), uint({}));", inst, a, b);
}
void EmitSMax32(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
ctx.AddU32("{}=max(int({}), int({}));", inst, a, b);
}
void EmitUMax32(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
ctx.AddU32("{}=max(uint({}), uint({}));", inst, a, b);
}
void EmitSClamp32(EmitContext& ctx, IR::Inst& inst, std::string_view value, std::string_view min,
std::string_view max) {
const auto result{ctx.reg_alloc.Define(inst, Type::U32)};
ctx.Add("{}=clamp(int({}), int({}), int({}));", result, value, min, max);
SetZeroFlag(ctx, inst, result);
SetSignFlag(ctx, inst, result);
}
void EmitUClamp32(EmitContext& ctx, IR::Inst& inst, std::string_view value, std::string_view min,
std::string_view max) {
const auto result{ctx.reg_alloc.Define(inst, Type::U32)};
ctx.Add("{}=clamp(uint({}), uint({}), uint({}));", result, value, min, max);
SetZeroFlag(ctx, inst, result);
SetSignFlag(ctx, inst, result);
}
void EmitSLessThan(EmitContext& ctx, IR::Inst& inst, std::string_view lhs, std::string_view rhs) {
ctx.AddU1("{}=int({})<int({});", inst, lhs, rhs);
}
void EmitULessThan(EmitContext& ctx, IR::Inst& inst, std::string_view lhs, std::string_view rhs) {
ctx.AddU1("{}=uint({})<uint({});", inst, lhs, rhs);
}
void EmitIEqual(EmitContext& ctx, IR::Inst& inst, std::string_view lhs, std::string_view rhs) {
ctx.AddU1("{}={}=={};", inst, lhs, rhs);
}
void EmitSLessThanEqual(EmitContext& ctx, IR::Inst& inst, std::string_view lhs,
std::string_view rhs) {
ctx.AddU1("{}=int({})<=int({});", inst, lhs, rhs);
}
void EmitULessThanEqual(EmitContext& ctx, IR::Inst& inst, std::string_view lhs,
std::string_view rhs) {
ctx.AddU1("{}=uint({})<=uint({});", inst, lhs, rhs);
}
void EmitSGreaterThan(EmitContext& ctx, IR::Inst& inst, std::string_view lhs,
std::string_view rhs) {
ctx.AddU1("{}=int({})>int({});", inst, lhs, rhs);
}
void EmitUGreaterThan(EmitContext& ctx, IR::Inst& inst, std::string_view lhs,
std::string_view rhs) {
ctx.AddU1("{}=uint({})>uint({});", inst, lhs, rhs);
}
void EmitINotEqual(EmitContext& ctx, IR::Inst& inst, std::string_view lhs, std::string_view rhs) {
ctx.AddU1("{}={}!={};", inst, lhs, rhs);
}
void EmitSGreaterThanEqual(EmitContext& ctx, IR::Inst& inst, std::string_view lhs,
std::string_view rhs) {
ctx.AddU1("{}=int({})>=int({});", inst, lhs, rhs);
}
void EmitUGreaterThanEqual(EmitContext& ctx, IR::Inst& inst, std::string_view lhs,
std::string_view rhs) {
ctx.AddU1("{}=uint({})>=uint({});", inst, lhs, rhs);
}
} // namespace Shader::Backend::GLSL
|